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T2000 doesn't have an ILOM interface, it uses ALOM. I actually remember
a service call from many years ago when a customer had a similar issue
which turned out to be a fault PDB (Power distribution board). I take it
you've tried multiple media (dvd/cdrom)?

I've had this problem on 2 Netra T2000 machines. Both times the problem was solved by doing a firmware upgrade. ALOM isn't nearly as friendly as using ILOM is. Connect a laptop up with a serial cable to the console port. Everything can be upgraded from there.
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Reply from ias12005 on Jun 4 at 7:02 AM
You need to check also cdrom path at ok prompt with the help of below
command

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